Fitness device



FIG. 1 is a perspective view of a fitness device showing my new design;

FIG. 2 is a front elevational view thereof

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Portions of my new design shown in broken lines form no part of theclaimed design.

The ornamental design for a fitness device, as shown and described.